<template>
  <div class="login"  v-bind:style="{ backgroundImage: 'url(' + backgroundImage + ')' }">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">MELON</h3>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          auto-complete="off"
          placeholder="账号"
        >
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon"/>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon"/>
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <el-input
          v-model="loginForm.code"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon"/>
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCaptcha" class="login-code-img"/>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading"
          size="medium"
          type="primary"
          style="width:100%;"
          @click.native.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
        <div style=" color: rgb(155, 155, 155);margin:0 auto;"><span style="vertical-align: middle;">第三方登录:</span>
          <img
            src=""
            width="22" height="22" title="QQ" style="vertical-align: middle; margin-left: .8em;">
          <img
            src=""
            width="22" height="22" title="微信(须配置)" style="vertical-align: middle; margin-left: .8em;">
          <img
            src=""
            width="22" height="22" title="百度" style="vertical-align: middle; margin-left: .8em;">
          <img
            src=""
            width="22" height="22" title="微博" style="vertical-align: middle; margin-left: .8em;">
          <img
            src=""
            width="22" height="22" title="支付宝" style="vertical-align: middle; margin-left: .8em;">
          <img
            src=""
            width="22" height="22" title="GitHub" style="vertical-align: middle; margin-left: .8em;">
          <!--      <a href="https://gitee.com/oauth/authorize?client_id=3a19b0430710fdd5cf0531bb03a40527a6678d71b831b8722b493dcb4148a645&redirect_uri=http://127.0.0.1:8080/melon/oauth/callback/gitee&response_type=code&state=1">-->
          <a :href="oauthUrl" >
            <img
              src=""
              width="22" height="22" title="Gitee" style="vertical-align: middle; margin-left: .8em;">
          </a>
        </div>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2023-???? melon All Rights Reserved.</span>
    </div>
  </div>
</template>

<script>
  import { getCaptchaCode, getGiteeCode} from "@/api/login";
import {getOneImg} from "@/api/common";
import Cookies from "js-cookie";
import {decrypt, encrypt} from '@/utils/jsencrypt'

export default {
  name: "Login",
  data() {
    return {
      codeUrl: "",
      oauthUrl: "",
      backgroundImage:"../assets/images/login-background.jpg",
      loginForm: {
        username: "admin",
        password: "admin123",
        rememberMe: false,
        code: "",
        uuid: "",
        giteeAuthUrl: ""
      },
      loginRules: {
        username: [
          {required: true, trigger: "blur", message: "请输入您的账号"}
        ],
        password: [
          {required: true, trigger: "blur", message: "请输入您的密码"}
        ],
        code: [{required: true, trigger: "change", message: "请输入验证码"}]
      },
      loading: false,
      // 验证码开关
      captchaEnabled: true,
      // 注册开关
      register: false,
      redirect: undefined
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        console.info("watch handler")
        this.redirect = route.query && route.query.redirect;
        this.getOauth2Token();
      },
      immediate: true
    }
  },
  created() {
    this.getAuthCookies("created")
    this.getCaptcha();
    this.getOauthUrl();
    this.getCookie();
    this.getBackgroundImg();
  },
  updated(){
    this.getOauth2Token("updated");
  },
  methods: {
    getCaptcha() {
      getCaptchaCode().then(res => {
        this.captchaEnabled = res.captchaEnabled === undefined ? true : res.captchaEnabled;
        if (this.captchaEnabled) {
          this.codeUrl = "data:image/gif;base64," + res.img;
          this.loginForm.uuid = res.uuid;
        }
      });
    },
    getOauthUrl() {
      getGiteeCode().then(res => {
        //console.log("获取到oauth的地址为：", res);
        this.oauthUrl = res.msg;
      });
    },
    getCookie() {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      };
    },
    getAuthCookies(tag){
      const token = Cookies.get('oauth2Token');
      console.log(tag," oauthToken cookie : ", token)
      return token
    },
    getOauth2Token() {
      const token = this.getAuthCookies("getOauth2Token")
        //debugger
      if (token != undefined) {
        this.handlerOauth(token);
      }
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          let that = this;
          this.loading = true;
          if (this.loginForm.rememberMe) {
            Cookies.set("username", this.loginForm.username, {expires: 30});
            Cookies.set("password", encrypt(this.loginForm.password), {expires: 30});
            Cookies.set('rememberMe', this.loginForm.rememberMe, {expires: 30});
          } else {
            Cookies.remove("username");
            Cookies.remove("password");
            Cookies.remove('rememberMe');
          }
          this.$store.dispatch("Login", this.loginForm).then(() => {
            this.$router.push({path: this.redirect || "/"}).catch(() => {
              that.loading = false;
            });
          }).catch(() => {
            that.loading = false;
          });
        }
      });
    },
    handlerOauth(token) {
      this.$store.dispatch("Oauth", token).then(() => {
        console.log("handlerOauth...")
        this.$router.push({path: this.redirect || "/"}).catch(() => {
        });
      }).catch(() => {

      });
    },
    getBackgroundImg(){
      getOneImg().then(res => {
          this.backgroundImage = res.data;
      });
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-size: cover;
}

.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 38px;

    input {
      height: 38px;
    }

  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: .8em;
  }

}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 38px;
  float: right;
}

img {
  cursor: pointer;
  vertical-align: middle;
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}

.login-code-img {
  height: 38px;
}
</style>
